variot - var-202203-1871

var-202203-1871

Vulnerability from variot

In Apache APISIX before 2.13.0, when decoding JSON with duplicate keys, lua-cjson will choose the last occurred value as the result. By passing a JSON with a duplicate key, the attacker can bypass the body_schema validation in the request-validation plugin. For example, {"string_payload":"bad","string_payload":"good"} can be used to hide the "bad" input. Systems satisfy three conditions below are affected by this attack: 1. use body_schema validation in the request-validation plugin 2. upstream application uses a special JSON library that chooses the first occurred value, like jsoniter or gojay 3. upstream application does not validate the input anymore. The fix in APISIX is to re-encode the validated JSON input back into the request body at the side of APISIX. Improper Input Validation vulnerability in COMPONENT of Apache APISIX allows an attacker to IMPACT. This issue affects Apache APISIX Apache APISIX version 2.12.1 and prior versions. (DoS) It may be in a state. Apache Apisix is a cloud-native microservice API gateway service of the Apache Foundation. The software is implemented based on OpenResty and etcd, with dynamic routing and plug-in hot loading, suitable for API management under the microservice system

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cve-2022-25757

Vulnerability from cvelistv5

Published

2022-03-28 07:00

Modified

2024-08-03 04:49

Severity ?

Summary

In Apache APISIX before 2.13.0, when decoding JSON with duplicate keys, lua-cjson will choose the last occurred value as the result. By passing a JSON with a duplicate key, the attacker can bypass the body_schema validation in the request-validation plugin. For example, `{"string_payload":"bad","string_payload":"good"}` can be used to hide the "bad" input. Systems satisfy three conditions below are affected by this attack: 1. use body_schema validation in the request-validation plugin 2. upstream application uses a special JSON library that chooses the first occurred value, like jsoniter or gojay 3. upstream application does not validate the input anymore. The fix in APISIX is to re-encode the validated JSON input back into the request body at the side of APISIX. Improper Input Validation vulnerability in __COMPONENT__ of Apache APISIX allows an attacker to __IMPACT__. This issue affects Apache APISIX Apache APISIX version 2.12.1 and prior versions.

References

▼	URL	Tags
	https://lists.apache.org/thread/03vd2j81krxmpz6xo8p1dl642flpo6fv	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2022/03/28/2	mailing-list, x_refsource_MLIST

Impacted products

Vendor

Product

Version

▼

Apache Software Foundation

Apache APISIX

Version: Apache APISIX <

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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